Cold source activated hot rod state detection method and system and electronic equipment

Abstract

The invention discloses a cold source activated hot rod state detection method and system and electronic equipment. The method comprises the following steps: locally cooling a cooling point of the hot rod; lower temperature measurement data of lower temperature measurement points below the hot rod cooling point are obtained, the number of the lower temperature measurement points is two or more, and the lower temperature measurement points are sequentially arranged downwards; analyzing and judging the working state of the hot rod by combining the lower temperature measurement data; if the change states of two or more than two lower temperature measurement data tend to be consistent, judging that the hot rod is in a normal working state; and if two or more lower temperature measurement data change slowly and the temperature value curves are arranged in a step shape, judging that the hot rod is in an abnormal working state. According to the technical scheme provided by the invention, the reliability of the detection result of the running state of the hot rod can be improved.

Description

Technical Field

[0001] The invention relates to a method for detecting a hot rod state activated by a cold source, belonging to the technical field of frozen soil temperature control, and also relates to a hot rod state detection system and electronic equipment activated by a cold source. Background Art

[0002] In order to build infrastructure in permafrost areas and optimize the foundations in permafrost areas, heat rods are often used to freeze and reinforce the permafrost.

[0003] The number of heat rods used varies according to the geological conditions of frozen soil in different regions. The distance between heat rods in densely populated areas can be as short as 1 meter. The use of such a large number of heat rods poses a huge challenge to the subsequent detection of the operating status of the heat rods.

[0004] How to detect whether there is still working medium inside the heat rod and whether the heat rod can still operate normally. In the prior art "201710588132.4 - An all-weather frozen soil area heat pipe operating data detection device", only one temperature measuring point is set below the cooling point to judge the activation effect of the heat rod; when the temperature measuring point fails, it will be easily mistakenly judged as a failure of the heat rod or normal operation.

[0005] Therefore, how to provide a method for detecting the state of a hot rod with cold source activation, which can improve the reliability of the detection results of the hot rod operating state, is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0006] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to improve the reliability of the detection results of the operation status of the hot rod. The present invention provides a method for detecting the status of a hot rod with cold source activation, the method comprising the following steps: locally cooling the cooling point of the hot rod; obtaining the lower temperature measurement data of the lower temperature measurement points below the cooling point of the hot rod, the number of the lower temperature measurement points is two or more, and the lower temperature measurement points are arranged downward in sequence; combining the lower temperature measurement data to analyze and judge the working status of the hot rod: if there are two or more of the lower temperature measurement data whose change states tend to be consistent, the hot rod is judged to be in a normal working state; if there are two or more of the lower temperature measurement data whose change states tend to be consistent, the hot rod is judged to be in a normal working state; if there are two or more of the lower temperature measurement data whose change states tend to be consistent, and the temperature value curve is arranged in a step-like manner, the hot rod is judged to be in an abnormal working state.

[0007] According to a first embodiment of the present invention, a technical solution of a method for detecting a hot rod state activated by a cold source is provided:

[0008] In a technical solution of a method for detecting the state of a hot rod activated by a cold source, the method includes the following steps: locally cooling the cooling point of the hot rod; obtaining the lower temperature measurement data of the lower temperature measurement points below the cooling point of the hot rod, the number of the lower temperature measurement points is two or more, and the lower temperature measurement points are arranged downward in sequence; combining the lower temperature measurement data to analyze and determine the working state of the hot rod: if there are two or more of the lower temperature measurement data whose change states tend to be consistent, then the hot rod is judged to be in a normal working state; if there are two or more of the lower temperature measurement data whose change states tend to be consistent, and the temperature value curve is arranged in a step-like manner, then the hot rod is judged to be in an abnormal working state.

[0009] Further, as a more preferred implementation scheme of the present invention, the changing state of the temperature measurement data below tends to be consistent, specifically: after the hot rod cooling point is locally cooled, the temperature measurement value of the temperature measurement data below gradually decreases over time and the value tends to be consistent; the temperature measurement data below changes slowly, and the temperature value curve is arranged in a step-like manner, specifically: after the hot rod cooling point is locally cooled, the cooling rates of multiple temperature measurement points below are different, the temperature value curves of multiple temperature measurement data below decrease successively, and there are intervals between the temperature value curves of multiple temperature measurement data below.

[0010] Further, as a more preferred implementation scheme of the present invention, the "the lower temperature measuring points are arranged downward in sequence" is specifically: a plurality of the lower temperature measuring points are arranged downward from a side close to the hot rod cooling point to a side away from the hot rod cooling point; preferably, the downward arrangement is specifically an equal-interval downward arrangement; preferably, the downward arrangement is a vertical downward arrangement.

[0011] Furthermore, as a more preferred implementation scheme of the present invention, the following steps are also included: obtaining upper temperature measurement data of an upper temperature measurement point above the cooling point of the hot rod; analyzing and judging the working state of the hot rod based on the upper temperature measurement data and the lower temperature measurement data: if the change states of the upper temperature measurement data and the lower temperature measurement data are the same or similar, then the hot rod is judged to be in an abnormal working state.

[0012] Furthermore, as a more preferred implementation scheme of the present invention, the following steps are also included: in combination with the upper temperature measurement data, the lower temperature measurement data is corrected and optimized to obtain first lower optimized temperature measurement data; based on the first lower optimized temperature measurement data, the working medium temperature data of the condensing working medium in the hot rod is obtained; based on the working medium temperature data and in combination with the working medium characteristics, the current hot rod internal pressure value is analyzed, and if the internal pressure value is lower than the first pressure threshold, a hot rod pressure abnormality alarm is issued; wherein, the first pressure threshold is related to the working medium characteristics.

[0013] Furthermore, as a more preferred implementation scheme of the present invention, the method also includes: obtaining circumferential temperature measurement data of circumferential temperature measurement points at the same height as the cooling point of the hot rod; correcting and optimizing the lower temperature measurement data in combination with the upper temperature measurement data and the circumferential temperature measurement data to obtain second lower optimized temperature measurement data; obtaining working medium temperature data of the condensed working medium in the hot rod based on the second lower optimized temperature measurement data; analyzing the current internal pressure value of the hot rod based on the working medium temperature data and in combination with the characteristics of the working medium, and issuing a hot rod pressure abnormality alarm if the internal pressure value is lower than a first pressure threshold; wherein the first pressure threshold is related to the characteristics of the working medium.

[0014] Furthermore, as a more preferred embodiment of the present invention, the local cooling method includes the following steps: selecting a cooling point on the hot rod; setting a cold source on the hot rod so that the cold source cools the cooling point; the refrigeration principle of the cold source is one or more of semiconductor refrigeration, heat pump compressor refrigeration, and cold storage device refrigeration.

[0015] Furthermore, as a more preferred embodiment of the present invention, the method further comprises: applying vibration to the wall of the hot rod, wherein the frequency of the vibration is associated with the resonance frequency of the high-pressure working medium in the hot rod.

[0016] According to a second embodiment of the present invention, a technical solution of a hot rod state detection system activated by a cold source is provided:

[0017] In a technical solution of a hot rod state detection system activated by a cold source, the system is used to execute the above-mentioned hot rod state detection method activated by a cold source; the system includes: an end controller; a cold source connected to the end controller by signal and used to locally cool the hot rod, the cold source being used to be set at a cooling point; a temperature measuring device connected to the end controller by signal and used to measure the temperature data of the hot rod wall; a communication device connected to the end controller by signal and used to transmit the temperature measurement data. The technical solution of the hot rod state detection system activated by a cold source provided in the present application also has the beneficial effects of the above-mentioned technical solution.

[0018] According to a third embodiment of the present invention, a technical solution of an electronic device is provided:

[0019] In the technical solution of the electronic device, the electronic device includes: a computer program, the computer program is used to execute the above-mentioned cold source activated hot rod state detection method; a memory, the memory is used to store the computer program; the processor is used to execute the computer program. The technical solution of the electronic device provided by this application also has the beneficial effects of the above-mentioned technical solution.

[0020] Compared with the prior art, this solution performs local cooling on the hot rod so that the tube wall of the hot rod is cooled. After the lower temperature than that inside the hot rod is transmitted to the inside of the hot rod, the gas inside the hot rod is cooled and liquefied into droplets; the liquefied droplets flow downward from the cooling point, thereby cooling the tube wall of the hot rod below the cooling point; because the working medium gas in the hot rod condenses and liquefies and flows downward along the tube wall, that is, the tube wall below the cooling point is cooled by the droplets, and the temperature change trend of the tube wall below the cooling point tends to be consistent after being cooled by the droplets; therefore, by detecting the temperature measurement point vertically downward below the cooling point, if there are two or more temperature measurement data changes below that tend to be consistent, it can be determined that the hot rod is in a normal working state. The technical solution provided by this application can improve the reliability of the detection results of the hot rod operating state.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The technical solution provided by this application can improve the reliability of the detection results of the hot rod operating status;

[0023] 2. The technical solution provided by the present application is that the temperature measuring points at the bottom are arranged downward at equal intervals, and the falling speed of the internal condensation droplets can be determined by analyzing the cooling temperature fluctuations, and then the size of the condensation droplets can be determined;

[0024] 3. The technical solution provided by the present application determines whether the formation speed of condensed liquid droplets meets the standard under the same temperature change rate, and determines whether the high pressure state of the working medium inside the heat rod meets the standard according to the formation speed of condensed liquid droplets, and identifies whether there is a recent leakage;

[0025] 4. The technical solution provided by the present application has different effects on the condensation of the working medium when it is cooled under different temperature and pressure environments. Combined with the previous experimental data, the current pressure inside the heat rod can be judged according to the current temperature and flow rate of the condensed droplets, and the pressure value of the heat rod can be warned. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of a method for detecting a hot rod state activated by a cold source in an embodiment of the present invention;

[0027] Figure 2 This is a temperature data diagram of the experiment 1 of the embodiment of the present invention;

[0028] Figure 3 This is an experimental temperature data diagram of comparative experiment 1 of the present invention;

[0029] Figure 4 This is an experimental temperature data diagram of comparative experiment 2 of the present invention;

[0030] Figure 5This is an experimental temperature data diagram of comparative experiment 3 of the present invention;

[0031] Figure 6 This is an experimental temperature data diagram of the experiment 1 of the present invention, which actively causes a temperature measurement point sensor failure. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0033] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0036] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0037] According to a first embodiment of the present invention, a technical solution of a method for detecting a hot rod state activated by a cold source is provided:

[0038] In a technical solution of a method for detecting the state of a hot rod activated by a cold source, the method includes the following steps: locally cooling the cooling point of the hot rod; obtaining the lower temperature measurement data of the lower temperature measurement points below the cooling point of the hot rod, the number of the lower temperature measurement points is two or more, and the lower temperature measurement points are arranged downward in sequence; combining the lower temperature measurement data to analyze and determine the working state of the hot rod: if there are two or more of the lower temperature measurement data whose change states tend to be consistent, then the hot rod is judged to be in a normal working state; if there are two or more of the lower temperature measurement data whose change states tend to be consistent, and the temperature value curve is arranged in a step-like manner, then the hot rod is judged to be in an abnormal working state.

[0039] It should be noted that the working medium referred to in the present application is a phase change liquid, and the specific working medium is liquid ammonia.

[0040] In this solution, the hot rod is locally cooled so that the tube wall of the hot rod is cooled. After the lower temperature than that inside the hot rod is transmitted to the inside of the hot rod, the gas inside the hot rod is cooled and liquefied into droplets; the liquefied droplets flow downward from the cooling point, thereby cooling the tube wall of the hot rod below the cooling point; because the working medium gas in the hot rod condenses and liquefies and flows downward along the tube wall, that is, the tube wall below the cooling point is cooled by the droplets, and the temperature change trend of the tube wall below the cooling point tends to be consistent after being cooled by the droplets; therefore, by detecting the temperature measurement point vertically downward below the cooling point, if there are two or more temperature measurement data changes below that tend to be consistent, it can be determined that the hot rod is in a normal working state. The technical solution provided by this application can improve the reliability of the detection results of the hot rod operation status.

[0041] In the prior art, although there is a technical solution for activating the hot rod by a cold source and detecting the temperature of the tube wall to determine whether the hot rod is working normally, the applicant has found through research that when the working medium inside the hot rod is lost, the inside of the hot rod is basically air at normal temperature and pressure. After the hot rod in this state is cooled, the temperature of the tube wall below the cooling point will drop due to the conduction of cold air from the tube wall and the sinking of cold air in the tube. That is to say, in the prior art, direct detection of the hot rod wall through a single temperature measuring point below the cooling point or multiple temperature measuring points at the same horizontal height leads to inaccurate judgment.

[0042] In order to solve the problem of inaccurate judgment of the operation status of the hot rod by directly detecting the hot rod wall at a single temperature measuring point below the cooling point or multiple temperature measuring points at the same horizontal height; the applicant found through theoretical research and experimental judgment that after a normal hot rod is activated by a cold source, a certain amount of droplets will flow downward. In this process, the pipe wall at a certain distance below the cooling point can be cooled to a certain extent, and the temperature of this section of the pipe wall tends to be consistent. Based on this research finding, the present application scheme obtains the lower temperature measurement data of two or more lower temperature measurement points with a certain interval below the cooling point. If the change status of two or more lower temperature measurement data tends to be consistent, it can be judged that the hot rod is in a normal working state.

[0043] In the prior art, those skilled in the art have not been able to find a solution for setting a temperature measuring point below the cooling point or setting multiple temperature measuring points at the same horizontal height of the heat rod. Due to the above-mentioned objective and realistic reasons, the prior art cannot truly reflect whether the heat rod is currently in a normal operating state.

[0044] It should be noted that this scheme is specifically used to detect hot rods in frozen soil areas in summer; in summer, due to the high temperature of the outside air, the temperature of the hot rod heat dissipation section is higher than the temperature of the hot rod heat absorption section, the working medium of the hot rod heat dissipation section and the heat absorption section does not transform into each other, and the hot rod is in an insulating state; at this time, the air temperature inside the hot rod heat dissipation section and the insulation section is consistent with the outside temperature; after the hot rod cooling point is cooled by the cold source, the air inside the hot rod cooling point is cooled and liquefied, and then water droplets are formed near the cooling point. When the droplet size is large enough, the droplet flows downward in the vertical direction of the cooling point; during the flow process, the droplets exchange heat with the inner wall of the hot rod below the hot rod cooling point; due to the contraction and liquefaction of the air in the cooling point area inside the hot rod, the high-pressure gas in other areas inside the hot rod moves closer to the cooling point, thereby achieving continuous liquefaction at the cooling point, and finally condensing the droplets to form a certain amount of condensate fluid, which continuously cools the inner wall of the hot rod below the cooling point.

[0045] To elaborate specifically, in an embodiment of the present invention, the changing state of the temperature measurement data below tends to be consistent, specifically: after local cooling of the hot rod cooling point, the temperature measurement value of the temperature measurement data below gradually decreases over time and the value tends to be consistent; the temperature measurement data below changes slowly, and the temperature value curve is arranged in a stepped manner, specifically: after local cooling of the hot rod cooling point, the cooling speeds of multiple temperature measurement points below are different, the temperature value curves of multiple temperature measurement data below decrease successively, and there are intervals between the temperature value curves of multiple temperature measurement data below.

[0046] It should be noted that when there is a working medium inside the hot rod, after the cooling point is cooled, the high-pressure working medium gas near the cooling point inside the hot rod will be cooled and liquefied, and condensed on the inner wall of the hot rod at the cooling point to produce condensed droplets, which flow downward from the cooling point, and almost simultaneously cool down the multiple lower temperature measuring points below the cooling point in this solution. Therefore, in the technical solution of this application, the temperatures measured by the multiple lower temperature measuring points of the cooling point have the same change trend.

[0047] Specifically, when there is a working medium inside the hot rod, the temperature test curve obtained by the technical solution of the present application has the following characteristics:

[0048] First, multiple lower temperature measuring points are cooled down almost at the same time; second, since they are cooled down by condensed liquid droplets, the temperature of multiple lower temperature measuring points drops earlier than that of the case without coolant; third, also because of the second point, the temperature drop rate of multiple lower temperature measuring points is higher than that of the case without coolant, that is, the temperature drops faster; fourth, since they are cooled down by condensed liquid droplets at the same time and in a unified manner, the cooling effect of multiple lower temperature measuring points is consistent, that is, the temperature curves of the lower temperature measuring points eventually tend to be consistent and change synchronously.

[0049] like Figure 2 In Experiment 1, there is a working medium inside the hot rod, and four lower temperature measurement points (B1, B2, B3, and B4) are set below the cooling point. After cooling the cooling point, the temperatures of all the lower cooling points tend to be consistent, and all show a rapid downward trend, that is, under the action of the condensate fluid, the change states of two or more of the lower temperature measurement data of all the lower cooling points tend to be consistent.

[0050] like Figure 3 In the comparative experiment 1 shown, there is no working medium inside the hot rod, and 4 lower temperature measuring points (B1, B2, B3, B4) are set below the cooling point. The cooling point is cooled directly; after cooling for a period of time, the first lower temperature measuring point below the cooling point from top to bottom is cooled by the internal cold air first compared to the lower temperature measuring point below it, so on the temperature curve over time, its temperature drops first and the fastest; the second lower temperature measuring point from top to bottom is second, the third lower temperature measuring point is third, and the fourth lower temperature measuring point is the last; finally, the temperature curves of the 4 lower temperature measuring points are arranged in a stepped interval.

[0051] like Figure 4In the comparative experiment 2 shown in the figure, there is a working medium inside the hot rod, and four circumferential temperature measuring points (B4a, B4b, B4c, and B4d) are set at the same level below the cooling point. After the cooling point is cooled for a period of time, the temperature of the temperature measuring point below the cooling point drops relatively obviously, and the temperature data of other circumferential temperature measuring points change relatively slowly, and the temperature fluctuations are basically the same, but the decline is slow and difficult to distinguish.

[0052] like Figure 5 In the comparative experiment 3 shown in the figure, there is no working medium inside the hot rod, and four circumferential temperature measuring points (B4a, B4b, B4c, and B4d) are set at the same level below the cooling point. After cooling the cooling point for a period of time, the temperature data change trend of the four circumferential temperature measuring points is relatively slow, and the temperature fluctuations are basically the same, but the decline is slow and difficult to distinguish.

[0053] It should be noted that, by comparing Example 1 and Comparative Example 1, using the technical solution provided by the present application, the temperature curve diagrams have very obvious differences in the scenarios where there is a working medium inside the hot rod and when there is no working medium inside the hot rod; compared with the solutions of the prior art, it is easier to identify.

[0054] It should be noted that, by comparing Comparative Example 2 and Comparative Example 3, when the temperature measuring points are normal, the data of one temperature measuring point in Comparative Example 2 is significantly different from the data of other temperature measuring points. However, if there is a fault in the temperature measuring point located directly below the cooling point, it is very likely that regardless of whether there is a working medium inside the hot rod, the temperature graphs of Comparative Example 2 and Comparative Example 3 will change in a relatively consistent manner, that is, they will both decrease relatively slowly, the temperatures will tend to be consistent, and they will be difficult to distinguish.

[0055] In summary, the technical solution provided by the present application can efficiently and accurately determine whether the heat rod is activated and operating normally by detecting the temperature of the temperature measuring point in the vertical direction below the cooling point.

[0056] In order to avoid the situation where the temperature measured at individual temperature measuring points is not the actual temperature due to failure of the temperature measuring points, in actual applications, the number of temperature measuring points below the cooling point can be increased to offset the problem of inaccurate judgment data caused by failure of individual temperature measuring points.

[0057] like Figure 6 As shown, when conducting Experiment 1, a fault of a temperature measuring point sensor is actively caused (B2), and the temperature curves of the other three temperature measuring points (B1, B3, and B4) can all show the same fast and consistent downward curve state.

[0058] To explain specifically, in an embodiment of the present invention, “the lower temperature measuring points are arranged downward in sequence” specifically means that a plurality of the lower temperature measuring points are arranged downward from a side close to the hot rod cooling point to a side away from the hot rod cooling point.

[0059] It should be noted that the temperature measuring point below the cooling point is set vertically downward so as to accurately measure the temperature measuring point directly below the cooling point.

[0060] Specifically, in the embodiment of the present invention, the downward arrangement is specifically an equal-spaced downward arrangement.

[0061] It should be noted that the temperature measuring points below are arranged at equal intervals downward, and the falling speed of the internal condensation droplets can be determined by analyzing the cooling temperature fluctuations, and then the size of the condensation droplets can be determined; based on the same temperature change rate, it can be determined whether the formation speed of the condensation droplets meets the standard, and based on the formation speed of the condensation droplets, it can be determined whether the high-pressure state of the working medium inside the hot rod meets the standard, and whether there is a recent leak.

[0062] Specifically, in the embodiment of the present invention, the downward arrangement is a vertical downward arrangement.

[0063] To explain specifically, in an embodiment of the present invention, the following steps are also included: obtaining upper temperature measurement data of an upper temperature measurement point above the cooling point of the hot rod; analyzing and judging the working state of the hot rod based on the upper temperature measurement data and the lower temperature measurement data: if the change states of the upper temperature measurement data and the lower temperature measurement data are the same or similar, then the hot rod is judged to be in an abnormal working state.

[0064] It should be noted that for a further accurate judgment, the temperature data of the temperature measuring point above the cooling point should be obtained at the same time; if there is no working medium inside the hot rod, the gas inside the hot rod, under the action of the cooling point, shows a temperature change trend of gradual cooling; that is, the temperature of the temperature measuring point closer to the cooling point will drop first, and the temperature farther away from the temperature measuring point will drop with delay, and the temperature drop rate will be relatively gentle; considering that the cooling gas has a natural tendency to sink, therefore, when the distances from the lower temperature measuring point and the upper temperature measuring point to the cooling point are the same, the temperature of the lower temperature measuring point will be relatively lower than that of the temperature measuring point above, but the difference will not be too large.

[0065] Based on the above situation, in the embodiment of the present scheme, a more intuitive reference will be obtained: when there is a working medium inside the hot rod, the temperature curve of the upper temperature measuring point is arranged step by step, and the temperature curve of the lower temperature measuring point changes consistently, and the temperature curve of the upper temperature measuring point and the lower temperature measuring point have a relatively faster temperature drop; that is, there is a clear difference between the temperature curves of the upper temperature measuring point and the lower temperature measuring point. When there is no working medium inside the hot rod, the temperature curves of the upper temperature measuring point and the lower temperature measuring point are both arranged step by step, and the temperature curves of the upper temperature measuring point and the lower temperature measuring point are relatively slow.

[0066] To elaborate specifically, in an embodiment of the present invention, the following steps are also included: in combination with the upper temperature measurement data, the lower temperature measurement data is corrected and optimized to obtain first lower optimized temperature measurement data; based on the first lower optimized temperature measurement data, the working medium temperature data of the condensing working medium in the hot rod is obtained; based on the working medium temperature data and in combination with the working medium characteristics, the current hot rod internal pressure value is analyzed, and if the internal pressure value is lower than the first pressure threshold, a hot rod pressure abnormality alarm is issued; wherein, the first pressure threshold is related to the working medium characteristics.

[0067] It should be noted that after the cooling point of the hot rod is cooled, the temperature change of the inner wall of the hot rod will be affected by the following conditions: first, the heat conduction of the hot rod wall. Without considering the cooling gas and condensed droplets inside the hot rod, the temperature measuring point closer to the cooling point will be more affected by the heat conduction of the hot rod wall; second, the heat conduction of the cooling gas inside the hot rod has a cooling effect on the inner wall of the hot rod; third, the condensed droplets formed at the cooling point flow downward, and have a relatively strong cooling effect on the inner wall of the hot rod below.

[0068] It should be noted that, by analyzing the upper temperature measurement data, the temperature change relationship of the upper temperature measurement point affected by the cold source over time can be obtained; the upper temperature measurement point is mainly affected by the heat conduction of the heat rod wall and the heat conduction of the gas inside the hot rod; the lower temperature measurement data can be optimized in combination with the upper temperature measurement data to eliminate the influence of the heat conduction of the hot rod wall and the heat conduction of the gas inside the hot rod on the lower temperature measurement point data, and then the first lower optimized temperature measurement data that only reflects the influence of the condensation droplets on the lower temperature measurement point is obtained.

[0069] Through further analysis of the first bottom optimized temperature measurement data, combined with the heat conduction relationship between the working medium temperature and the heat rod wall temperature determined in advance, the working medium temperature data is obtained.

[0070] Since the working medium has different effects of condensation when it is cooled under different temperature and pressure environments, combined with the previous experimental data, the current pressure inside the hot rod can be judged according to the temperature and flow rate of the current condensed liquid droplets; if it is identified that the current pressure value inside the hot rod is lower than the first pressure threshold, an abnormal hot rod pressure alarm is issued. The technical solution provided by this application can warn the pressure value of the hot rod.

[0071] To elaborate specifically, in an embodiment of the present invention, the method also includes: obtaining circumferential temperature measurement data of circumferential temperature measurement points at the same height as the cooling point of the hot rod; correcting and optimizing the lower temperature measurement data in combination with the upper temperature measurement data and the circumferential temperature measurement data to obtain second lower optimized temperature measurement data; obtaining working medium temperature data of the condensed working medium in the hot rod based on the second lower optimized temperature measurement data; analyzing the current internal pressure value of the hot rod based on the working medium temperature data and in combination with the characteristics of the working medium, and issuing a hot rod pressure abnormality alarm if the internal pressure value is lower than a first pressure threshold; wherein the first pressure threshold is related to the characteristics of the working medium.

[0072] It should be noted that, combined with the circumferential temperature measurement data at the same height of the cooling point, since the influence of the cooling air inside the heat rod is the same, the thermal conductivity performance parameters of the heat rod under the same cooling condition can be obtained, and then can be used to correct and optimize the lower temperature measurement data in combination with the upper temperature measurement data to obtain the second lower optimized temperature measurement data; the second lower optimized temperature measurement data reflects the influence of condensation droplets on the lower temperature measurement point more accurately than the first lower optimized temperature measurement data, so the final judgment of the internal pressure of the heat rod is more accurate, further avoiding the error of abnormal hot rod pressure alarm.

[0073] Specifically, in an embodiment of the present invention, the local cooling method includes the following steps: selecting a cooling point on the hot rod; setting a cold source on the hot rod so that the cold source cools the cooling point; the cooling principle of the cold source is one or more of semiconductor refrigeration, heat pump compressor refrigeration, and cold storage device refrigeration.

[0074] It should be noted that the cold storage material passed through the cold storage device is one or more of liquid nitrogen, dry ice, ice cubes, etc.

[0075] Specifically, in an embodiment of the present invention, the method further comprises: applying vibration to the wall of the hot rod, wherein the frequency of the vibration is associated with the resonance frequency of the high-pressure working medium in the hot rod.

[0076] It should be noted that by applying vibration to the wall of the hot rod, after the vibration is transmitted into the interior of the hot rod, the condensation of the gas of the high-pressure working medium in the hot rod is accelerated, the formation of droplets is accelerated, and the detection efficiency is improved.

[0077] Specifically, in an embodiment of the present invention, the temperature measurement method is one or more of thermal temperature measurement and infrared temperature measurement points.

[0078] According to a second embodiment of the present invention, a technical solution of a hot rod state detection system activated by a cold source is provided:

[0079] In a technical solution of a hot rod state detection system activated by a cold source, the system is used to execute the above-mentioned hot rod state detection method activated by a cold source; the system includes: an end controller; a cold source connected to the end controller by signal and used to locally cool the hot rod, the cold source being used to be set at a cooling point; a temperature measuring device connected to the end controller by signal and used to measure the temperature data of the hot rod wall; a communication device connected to the end controller by signal and used to transmit the temperature measurement data. The technical solution of the hot rod state detection system activated by a cold source provided in the present application also has the beneficial effects of the above-mentioned technical solution.

[0080] According to a third embodiment of the present invention, a technical solution of an electronic device is provided:

[0081] In the technical solution of the electronic device, the electronic device includes: a computer program, the computer program is used to execute the above-mentioned cold source activated hot rod state detection method; a memory, the memory is used to store the computer program; the processor is used to execute the computer program. The technical solution of the electronic device provided by this application also has the beneficial effects of the above-mentioned technical solution.

[0082] Example 1

[0083] A method for detecting the state of a hot rod activated by a cold source, the method comprising the following steps: locally cooling a cooling point of the hot rod; obtaining lower temperature measurement data of a lower temperature measurement point below the cooling point of the hot rod, wherein the number of the lower temperature measurement points is two or more and the lower temperature measurement points are arranged downward in sequence; and analyzing and judging the working state of the hot rod in combination with the lower temperature measurement data: if there are two or more lower temperature measurement data whose changing states tend to be consistent, then the hot rod is judged to be in a normal working state; if there are two or more lower temperature measurement data whose changing states tend to be consistent and the temperature value curve is arranged in a step-like manner, then the hot rod is judged to be in an abnormal working state.

[0084] Example 2.1

[0085] Example 1 is repeated, except that the change state of the temperature measurement data below tends to be consistent, specifically: after the hot rod cooling point is locally cooled, the temperature measurement value of the temperature measurement data below gradually decreases over time and the value tends to be consistent; the temperature measurement data below changes slowly, and the temperature value curve is arranged in a step-like manner, specifically: after the hot rod cooling point is locally cooled, the cooling speeds of multiple temperature measurement points below are different, the temperature value curves of multiple temperature measurement data below decrease successively, and there are intervals between the temperature value curves of multiple temperature measurement data below.

[0086] Example 2.2

[0087] Repeat Example 1, except that the "the lower temperature measuring points are arranged downward in sequence" is specifically: a plurality of the lower temperature measuring points are arranged downward from a side close to the hot rod cooling point to a side away from the hot rod cooling point; preferably, the downward arrangement is specifically arranged downward at equal intervals; preferably, the downward arrangement is arranged vertically downward.

[0088] Example 3.1

[0089] Repeat Example 1, but also include the following steps: obtain the upper temperature measurement data of the upper temperature measurement point above the cooling point of the hot rod; combine the upper temperature measurement data and the lower temperature measurement data to analyze and determine the working state of the hot rod: if the change states of the upper temperature measurement data and the lower temperature measurement data are the same or similar, then the hot rod is judged to be in an abnormal working state.

[0090] Example 3.2

[0091] Repeat Example 3.1, but also include the following steps: in combination with the upper temperature measurement data, correct and optimize the lower temperature measurement data to obtain first lower optimized temperature measurement data; based on the first lower optimized temperature measurement data, obtain the working medium temperature data of the condensing working medium in the hot rod; based on the working medium temperature data and in combination with the working medium characteristics, analyze the current hot rod internal pressure value, if the internal pressure value is lower than a first pressure threshold, issue a hot rod pressure abnormality alarm; wherein, the first pressure threshold is related to the working medium characteristics.

[0092] Example 3.3

[0093] Repeat Example 3.1, except that circumferential temperature measurement data of circumferential temperature measurement points at the same height as the hot rod cooling point are obtained; in combination with the upper temperature measurement data and the circumferential temperature measurement data, the lower temperature measurement data is corrected and optimized to obtain second lower optimized temperature measurement data; based on the second lower optimized temperature measurement data, the working medium temperature data of the condensed working medium in the hot rod is obtained; based on the working medium temperature data and in combination with the working medium characteristics, the current hot rod internal pressure value is analyzed, and if the internal pressure value is lower than the first pressure threshold, a hot rod pressure abnormality alarm is issued; wherein, the first pressure threshold is related to the working medium characteristics.

[0094] Example 4.1

[0095] Repeat Example 1, except that the local cooling method includes the following steps: selecting a cooling point on the hot rod; setting a cold source on the hot rod so that the cold source cools the cooling point; the cooling principle of the cold source is one or more of semiconductor refrigeration, heat pump compressor refrigeration, and cold storage device refrigeration.

[0096] Example 4.2

[0097] Example 1 is repeated, except that the method further comprises: applying vibration to the wall of the hot rod, wherein the frequency of the vibration is associated with the resonance frequency of the high-pressure working medium in the hot rod.

[0098] Example 5

[0099] A cold source activated hot rod state detection system, the system is used to execute the above-mentioned cold source activated hot rod state detection method; the system includes: an end controller; a cold source connected to the end controller by signal and used for local cooling of the hot rod, the cold source is used to be set at a cooling point; a temperature measuring device connected to the end controller by signal and used for measuring the temperature data of the hot rod wall; a communication device connected to the end controller by signal and used for transmitting the temperature measurement data.

[0100] Example 6

[0101] An electronic device, comprising: a computer program, the computer program is used to execute the above-mentioned cold source activated hot rod state detection method; a memory, the memory is used to store the computer program; and a processor, the processor is used to execute the computer program.

[0102] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting the state of a hot rod activated by a cold source, characterized in that: The method comprises the following steps: Local cooling of hot rod cooling points; Acquire lower temperature measurement data of lower temperature measurement points below the hot rod cooling point, the number of the lower temperature measurement points is two or more, and the lower temperature measurement points are arranged downward in sequence; Combined with the temperature measurement data below, analyze and judge the working status of the hot rod: If there are two or more of the temperature measurement data below that have the same change status, it is judged that the heating rod is in a normal working state; If there are two or more of the lower temperature measurement data that change slowly, and the temperature value curve is arranged in a step-like manner, it is judged that the heating rod is in an abnormal working state.

2. The method for detecting the state of a hot rod activated by a cold source according to claim 1, characterized in that: The temperature measurement data below tend to change in a consistent manner as follows: After the hot rod cooling point is locally cooled, the temperature values ​​of the lower temperature measurement data gradually decrease over time and the values ​​tend to be consistent; The temperature measurement data below changes slowly, and the temperature value curve is arranged in a step-like manner: After local cooling of the hot rod cooling point, the cooling speeds of the multiple lower temperature measurement points are different, the temperature value curves of the multiple lower temperature measurement data decrease successively, and there are intervals between the temperature value curves of the multiple lower temperature measurement data.

3. The method for detecting the state of a hot rod activated by a cold source according to claim 1, characterized in that: The "the lower temperature measuring points are arranged downward in sequence" specifically means: The plurality of lower temperature measuring points are arranged downward from a side close to the hot rod cooling point to a side away from the hot rod cooling point; preferably, the downward arrangement is arranged downward at equal intervals; preferably, the downward arrangement is arranged vertically downward.

4. The method for detecting the state of a hot rod activated by a cold source according to claim 1, characterized in that: The following steps are also included: Obtain upper temperature measurement data of an upper temperature measurement point above the hot rod cooling point; Combine the upper temperature measurement data and the lower temperature measurement data to analyze and determine the working status of the heating rod: If the change states of the upper temperature measurement data and the lower temperature measurement data are the same or similar, it is determined that the heat rod is in an abnormal working state.

5. The method for detecting the state of a hot rod activated by a cold source according to claim 4, characterized in that: The following steps are also included: In combination with the upper temperature measurement data, the lower temperature measurement data is corrected and optimized to obtain first lower optimized temperature measurement data; According to the first lower optimized temperature measurement data, the working medium temperature data of the condensed working medium in the heat rod is obtained; According to the working medium temperature data and in combination with the working medium characteristics, the current internal pressure value of the hot rod is analyzed, and if the internal pressure value is lower than the first pressure threshold, an abnormal hot rod pressure alarm is issued; The first pressure threshold is related to the characteristics of the working medium.

6. The method for detecting the state of a hot rod activated by a cold source according to claim 4, characterized in that: The method further includes: Obtain circumferential temperature measurement data of circumferential temperature measurement points at the same height as the hot rod cooling point; Combining the upper temperature measurement data and the circumferential temperature measurement data, the lower temperature measurement data is corrected and optimized to obtain second lower optimized temperature measurement data; According to the second lower optimized temperature measurement data, the working medium temperature data of the condensed working medium in the hot rod is obtained; According to the working medium temperature data and in combination with the working medium characteristics, the current internal pressure value of the hot rod is analyzed, and if the internal pressure value is lower than the first pressure threshold, an abnormal hot rod pressure alarm is issued; The first pressure threshold is related to the characteristics of the working medium.

7. The method for detecting the state of a hot rod activated by a cold source according to any one of claims 1 to 6, characterized in that: The local cooling method comprises the following steps: Select the cooling point on the hot rod; The cold source is arranged on the hot rod so that the cold source cools the cooling point; The cooling source has a refrigeration principle of one or more of semiconductor refrigeration, heat pump compressor refrigeration, and cold storage device refrigeration. It should be noted that the cold storage material passed through the cold storage device is one or more of liquid nitrogen, dry ice, ice cubes, etc.

8. The method for detecting the state of a hot rod activated by a cold source according to any one of claims 1 to 6, characterized in that: The method further includes: Vibrations are applied to the hot rod wall, the frequency of which is associated with the resonant frequency of the high pressure working medium in the hot rod. It should be noted that by applying vibration to the wall of the hot rod, after the vibration is transmitted into the interior of the hot rod, the condensation of the gas of the high-pressure working medium in the hot rod is accelerated, the formation of droplets is accelerated, and the detection efficiency is improved.

9. A cold source activated hot rod state detection system, characterized in that: The system is used to perform the cold source activated hot rod state detection method as described in any one of claims 1 to 8; the system comprises: Terminal Controller A cold source connected to the end controller signal and used for local cooling of the hot rod, wherein the cold source is used to be arranged at a cooling point; A temperature measuring device connected to the end controller signal and used to measure the temperature data of the hot rod wall; A communication device connected to the end controller signal and used to transmit the temperature measurement data.

10. An electronic device, characterized in that include: A computer program, the computer program being used to execute the method for detecting the state of a hot rod activated by a cold source as claimed in any one of claims 1 to 8; A memory, the memory being used to store the computer program; A processor is used to execute the computer program.

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